Home / 1,190,942.57-1,643,507.46-647,082.78

Finding the Fourth Proportional to 1,190,942.57, 1,643,507.46 and 647,082.78

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Solution

The fourth proportional to 1,190,942.57, 1,643,507.46 and 647,082.78 is: 892,977.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,942.57 : 1,643,507.46 = 647,082.78 : x
  2. Step 2: Convert to fraction form
    1,190,942.57/1,643,507.46 = 647,082.78/x
  3. Step 3: Cross multiply
    1,190,942.57x = 1,643,507.46 × 647,082.78
  4. Step 4: Simplify right side
    1,190,942.57x = 1,063,485,376,167.54
  5. Step 5: Solve for x
    x = 1,063,485,376,167.54/1,190,942.57
  6. Step 6: Final answer
    x = 892,977.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.